[switchtheme] Switchtheme

# Summary

# Project URL

https://www.drupal.org/project/switchtheme

# Where is the code?

https://www.drupal.org/node/1601192#comment-9533359

# Estimated completion date

# Dependencies

# Who's doing the port?

# What help do they need?

# D8 roadmap

# Background and reference information

(Links to any other helpful information, documentation, etc.)